

    \filetitle{vline}{Add vertical line to graph}{report/vline}

	\paragraph{Syntax}

\begin{verbatim}
P.vline(Caption,Date,...)
\end{verbatim}

\paragraph{Input arguments}

\begin{itemize}
\item
  \texttt{P} {[} struct {]} - Report object created by the
  \href{report/new}{\texttt{report.new}} function.
\item
  \texttt{Caption} {[} char {]} - Caption used to annotate the vertical
  line.
\item
  \texttt{Date} {[} numeric {]} - Date at which the vertical line will
  be plotted.
\end{itemize}

\paragraph{Options}

\begin{itemize}
\item
  \texttt{\textquotesingle{}hPosition=\textquotesingle{}} {[}
  \texttt{\textquotesingle{}bottom\textquotesingle{}} \textbar{}
  \texttt{\textquotesingle{}middle\textquotesingle{}} \textbar{}
  \emph{\texttt{\textquotesingle{}top\textquotesingle{}}} {]} -
  (Inheritable from parent objects) Horizontal position of the caption.
\item
  \texttt{\textquotesingle{}vPosition=\textquotesingle{}} {[}
  \texttt{\textquotesingle{}centre\textquotesingle{}} \textbar{}
  \texttt{\textquotesingle{}left\textquotesingle{}} \textbar{}
  \emph{\texttt{\textquotesingle{}right\textquotesingle{}}} {]} -
  (Inheritable from parent objects) Vertical position of the caption
  relative to the line.
\item
  \texttt{\textquotesingle{}timePosition=\textquotesingle{}} {[}
  \texttt{\textquotesingle{}after\textquotesingle{}} \textbar{}
  \texttt{\textquotesingle{}before\textquotesingle{}} \textbar{}
  \texttt{\textquotesingle{}middle\textquotesingle{}} {]} - Placement of
  the vertical line on the time axis: in the middle of the specified
  period, immediately before it (between the specified period and the
  previous one), or immediately after it (between the specified period
  and the next one).
\end{itemize}

\paragraph{Generic options}

See help on \href{report/Contents}{generic options} in report objects.

\paragraph{Description}

\paragraph{Example}


